fix versionCode

* fix rounding error on send

* fix check funds bug

app/CMakeLists.txt

@@ -139,6 +139,10 @@ add_library(device STATIC IMPORTED)
 set_target_properties(device PROPERTIES IMPORTED_LOCATION
         ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libdevice.a)
 
+add_library(device_trezor STATIC IMPORTED)
+set_target_properties(device_trezor PROPERTIES IMPORTED_LOCATION
+        ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libdevice_trezor.a)
+
 add_library(multisig STATIC IMPORTED)
 set_target_properties(multisig PROPERTIES IMPORTED_LOCATION
     ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libmultisig.a)
@@ -147,6 +151,22 @@ add_library(version STATIC IMPORTED)
 set_target_properties(version PROPERTIES IMPORTED_LOCATION
     ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libversion.a)
 
+add_library(net STATIC IMPORTED)
+set_target_properties(net PROPERTIES IMPORTED_LOCATION
+        ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libnet.a)
+
+add_library(hardforks STATIC IMPORTED)
+set_target_properties(hardforks PROPERTIES IMPORTED_LOCATION
+        ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/libhardforks.a)
+
+add_library(randomx STATIC IMPORTED)
+set_target_properties(randomx PROPERTIES IMPORTED_LOCATION
+        ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/librandomx.a)
+
+add_library(rpc_base STATIC IMPORTED)
+set_target_properties(rpc_base PROPERTIES IMPORTED_LOCATION
+        ${EXTERNAL_LIBS_DIR}/monero/lib/${ANDROID_ABI}/librpc_base.a)
+
 #############
 # System
 #############
@@ -166,6 +186,7 @@ target_link_libraries(  monerujo
                         mnemonics
                         ringct
                         ringct_basic
+                        net
                         common
                         cncrypto
                         blockchain_db
@@ -176,8 +197,12 @@ target_link_libraries(  monerujo
                         blocks
                         checkpoints
                         device
+                        device_trezor
                         multisig
                         version
+                        randomx
+                        hardforks
+                        rpc_base
 
                         boost_chrono
                         boost_date_time

app/build.gradle

@@ -7,8 +7,8 @@ android {
         applicationId "com.m2049r.xmrwallet"
         minSdkVersion 21
         targetSdkVersion 28
-        versionCode 177
+        versionCode 202
-        versionName "1.11.7 'Chernushka'"
+        versionName "1.12.12 'Caerbannog'"
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         externalNativeBuild {

app/src/main/cpp/device_io_monerujo.hpp

@@ -1,88 +0,0 @@
-// Copyright (c) 2017-2018, The Monero Project
-//
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without modification, are
-// permitted provided that the following conditions are met:
-//
-// 1. Redistributions of source code must retain the above copyright notice, this list of
-//    conditions and the following disclaimer.
-//
-// 2. Redistributions in binary form must reproduce the above copyright notice, this list
-//    of conditions and the following disclaimer in the documentation and/or other
-//    materials provided with the distribution.
-//
-// 3. Neither the name of the copyright holder nor the names of its contributors may be
-//    used to endorse or promote products derived from this software without specific
-//    prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
-// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
-// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
-// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-
-#if defined(HAVE_MONERUJO)
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-/**
- * @brief LedgerFind - find Ledger Device and return it's name
- * @param buffer     - buffer for name of found device
- * @param len        - length of buffer
- * @return  0 - success
- *         -1 - no device connected / found
- *         -2 - JVM not found
- */
-int LedgerFind(char *buffer, size_t len);
-
-/**
- * @brief LedgerExchange - exchange data with Ledger Device
- * @param command        - buffer for data to send
- * @param cmd_len        - length of send to send
- * @param response       - buffer for received data
- * @param max_resp_len   - size of receive buffer
- *
- * @return length of received data in response or -1 if error
- */
-int  LedgerExchange(unsigned char *command, unsigned int cmd_len, unsigned char *response, unsigned int max_resp_len);
-
-#ifdef __cplusplus
-}
-#endif
-
-#include "device_io.hpp"
-
-#pragma once
-
-namespace hw {
-  namespace io {
-    class device_io_monerujo: device_io {
-    public:
-      device_io_monerujo() {};
-      ~device_io_monerujo() {};
-
-      void init() {};
-      void release() {};
-
-      void connect(void *params) {};
-      void disconnect() {};
-      bool connected() const {return true;}; // monerujo is always connected before it gets here
-
-      // returns number of bytes read or -1 on error
-      int  exchange(unsigned char *command, unsigned int cmd_len, unsigned char *response, unsigned int max_resp_len) {
-        return LedgerExchange(command, cmd_len, response, max_resp_len);
-      }
-    };
-  };
-};
-
-#endif //#if defined(HAVE_MONERUJO)

app/src/main/cpp/monerujo.cpp

@@ -39,6 +39,7 @@ static jclass class_WalletListener;
 static jclass class_TransactionInfo;
 static jclass class_Transfer;
 static jclass class_Ledger;
+static jclass class_WalletStatus;
 
 std::mutex _listenerMutex;
 
@@ -61,6 +62,8 @@ JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) {
             jenv->FindClass("com/m2049r/xmrwallet/model/WalletListener")));
     class_Ledger = static_cast<jclass>(jenv->NewGlobalRef(
             jenv->FindClass("com/m2049r/xmrwallet/ledger/Ledger")));
+    class_WalletStatus = static_cast<jclass>(jenv->NewGlobalRef(
+            jenv->FindClass("com/m2049r/xmrwallet/model/Wallet$Status")));
     return JNI_VERSION_1_6;
 }
 #ifdef __cplusplus
@@ -581,10 +584,25 @@ Java_com_m2049r_xmrwallet_model_Wallet_getStatusJ(JNIEnv *env, jobject instance)
     return wallet->status();
 }
 
-JNIEXPORT jstring JNICALL
+jobject newWalletStatusInstance(JNIEnv *env, int status, const std::string &errorString) {
-Java_com_m2049r_xmrwallet_model_Wallet_getErrorString(JNIEnv *env, jobject instance) {
+    jmethodID init = env->GetMethodID(class_WalletStatus, "<init>",
+                                      "(ILjava/lang/String;)V");
+    jstring _errorString = env->NewStringUTF(errorString.c_str());
+    jobject instance = env->NewObject(class_WalletStatus, init, status, _errorString);
+    env->DeleteLocalRef(_errorString);
+    return instance;
+}
+
+
+JNIEXPORT jobject JNICALL
+Java_com_m2049r_xmrwallet_model_Wallet_statusWithErrorString(JNIEnv *env, jobject instance) {
     Bitmonero::Wallet *wallet = getHandle<Bitmonero::Wallet>(env, instance);
-    return env->NewStringUTF(wallet->errorString().c_str());
+
+    int status;
+    std::string errorString;
+    wallet->statusWithErrorString(status, errorString);
+
+    return newWalletStatusInstance(env, status, errorString);
 }
 
 JNIEXPORT jboolean JNICALL
@@ -1292,7 +1310,6 @@ Java_com_m2049r_xmrwallet_model_PendingTransaction_getFirstTxIdJ(JNIEnv *env, jo
         return nullptr;
 }
 
-
 JNIEXPORT jlong JNICALL
 Java_com_m2049r_xmrwallet_model_PendingTransaction_getTxCount(JNIEnv *env, jobject instance) {
     Bitmonero::PendingTransaction *tx = getHandle<Bitmonero::PendingTransaction>(env, instance);
@@ -1378,12 +1395,15 @@ Java_com_m2049r_xmrwallet_model_WalletManager_setLogLevel(JNIEnv *env, jclass cl
     Bitmonero::WalletManagerFactory::setLogLevel(level);
 }
 
+JNIEXPORT jstring JNICALL
+Java_com_m2049r_xmrwallet_model_WalletManager_moneroVersion(JNIEnv *env, jclass clazz) {
+    return env->NewStringUTF(MONERO_VERSION);
+}
+
 //
 // Ledger Stuff
 //
 
-#include "device_io_monerujo.hpp"
-
 /**
  * @brief LedgerExchange - exchange data with Ledger Device
  * @param command        - buffer for data to send
@@ -1417,7 +1437,7 @@ int LedgerExchange(
         return -1;
     }
     jsize len = jenv->GetArrayLength(dataRecv);
-    LOGD("LedgerExchange SCARD_S_SUCCESS %ld/%d", cmd_len, len);
+    LOGD("LedgerExchange SCARD_S_SUCCESS %u/%d", cmd_len, len);
     if (len <= max_resp_len) {
         jenv->GetByteArrayRegion(dataRecv, 0, len, (jbyte *) response);
         jenv->DeleteLocalRef(dataRecv);

app/src/main/cpp/monerujo.h

@@ -54,6 +54,8 @@ extern "C"
 {
 #endif
 
+extern const char* const MONERO_VERSION; // the actual monero core version
+
 // from monero-core crypto/hash-ops.h - avoid #including monero code here
 enum {
     HASH_SIZE = 32,

app/src/main/java/com/btchip/comm/android/BTChipTransportAndroidHID.java

@@ -46,10 +46,14 @@ public class BTChipTransportAndroidHID implements BTChipTransport {
         HashMap<String, UsbDevice> deviceList = manager.getDeviceList();
         for (UsbDevice device : deviceList.values()) {
             Timber.d("%04X:%04X %s, %s", device.getVendorId(), device.getProductId(), device.getManufacturerName(), device.getProductName());
-            if ((device.getVendorId() == VID) && (device.getProductId() == PID_HID)) {
+            if (device.getVendorId() == VID) {
+                final int deviceProductId = device.getProductId();
+                for (int pid : PID_HIDS) {
+                    if (deviceProductId == pid)
                         return device;
                 }
             }
+        }
         return null;
     }
 
@@ -74,7 +78,7 @@ public class BTChipTransportAndroidHID implements BTChipTransport {
     }
 
     private static final int VID = 0x2C97;
-    private static final int PID_HID = 0x0001;
+    private static final int[] PID_HIDS = {0x0001, 0x0004};
 
     private UsbDeviceConnection connection;
     private UsbInterface dongleInterface;

app/src/main/java/com/m2049r/xmrwallet/GenerateFragment.java

@@ -79,6 +79,23 @@ public class GenerateFragment extends Fragment {
 
     private String type = null;
 
+    private void clearErrorOnTextEntry(final TextInputLayout textInputLayout) {
+        textInputLayout.getEditText().addTextChangedListener(new TextWatcher() {
+            @Override
+            public void afterTextChanged(Editable editable) {
+                textInputLayout.setError(null);
+            }
+
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+        });
+    }
+
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
@@ -110,6 +127,23 @@ public class GenerateFragment extends Fragment {
                 }
             }
         });
+        clearErrorOnTextEntry(etWalletName);
+
+        etWalletPassword.getEditText().addTextChangedListener(new TextWatcher() {
+            @Override
+            public void afterTextChanged(Editable editable) {
+                checkPassword();
+            }
+
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+        });
+
         etWalletMnemonic.getEditText().setOnFocusChangeListener(new View.OnFocusChangeListener() {
             @Override
             public void onFocusChange(View v, boolean hasFocus) {
@@ -118,6 +152,8 @@ public class GenerateFragment extends Fragment {
                 }
             }
         });
+        clearErrorOnTextEntry(etWalletMnemonic);
+
         etWalletAddress.getEditText().setOnFocusChangeListener(new View.OnFocusChangeListener() {
             @Override
             public void onFocusChange(View v, boolean hasFocus) {
@@ -126,6 +162,8 @@ public class GenerateFragment extends Fragment {
                 }
             }
         });
+        clearErrorOnTextEntry(etWalletAddress);
+
         etWalletViewKey.getEditText().setOnFocusChangeListener(new View.OnFocusChangeListener() {
             @Override
             public void onFocusChange(View v, boolean hasFocus) {
@@ -134,6 +172,8 @@ public class GenerateFragment extends Fragment {
                 }
             }
         });
+        clearErrorOnTextEntry(etWalletViewKey);
+
         etWalletSpendKey.getEditText().setOnFocusChangeListener(new View.OnFocusChangeListener() {
             @Override
             public void onFocusChange(View v, boolean hasFocus) {
@@ -142,6 +182,7 @@ public class GenerateFragment extends Fragment {
                 }
             }
         });
+        clearErrorOnTextEntry(etWalletSpendKey);
 
         Helper.showKeyboard(getActivity());
 
@@ -310,21 +351,6 @@ public class GenerateFragment extends Fragment {
             }
         });
 
-        etWalletPassword.getEditText().addTextChangedListener(new TextWatcher() {
-            @Override
-            public void afterTextChanged(Editable editable) {
-                checkPassword();
-            }
-
-            @Override
-            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
-            }
-
-            @Override
-            public void onTextChanged(CharSequence s, int start, int before, int count) {
-            }
-        });
-
         etWalletName.requestFocus();
         initZxcvbn();
 
@@ -412,7 +438,7 @@ public class GenerateFragment extends Fragment {
             height = RestoreHeight.getInstance().getHeight(parser.parse(restoreHeight));
         } catch (ParseException ex) {
         }
-        if (height <= 0)
+        if ((height <= 0) && (restoreHeight.length() == 8))
             try {
                 // is it a date without dashes?
                 SimpleDateFormat parser = new SimpleDateFormat("yyyyMMdd");
@@ -682,8 +708,7 @@ public class GenerateFragment extends Fragment {
             }
         });
 
-        // set FLAG_SECURE to prevent screenshots in Release Mode
+        if (Helper.preventScreenshot()) {
-        if (!(BuildConfig.DEBUG && BuildConfig.FLAVOR_type.equals("alpha"))) {
             ledgerDialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
         }
 

app/src/main/java/com/m2049r/xmrwallet/GenerateReviewFragment.java

@@ -55,6 +55,8 @@ import com.m2049r.xmrwallet.util.KeyStoreHelper;
 import com.m2049r.xmrwallet.util.MoneroThreadPoolExecutor;
 import com.m2049r.xmrwallet.widget.Toolbar;
 
+import java.text.NumberFormat;
+
 import timber.log.Timber;
 
 public class GenerateReviewFragment extends Fragment {
@@ -72,6 +74,7 @@ public class GenerateReviewFragment extends Fragment {
     private TextView tvWalletPassword;
     private TextView tvWalletAddress;
     private TextView tvWalletMnemonic;
+    private TextView tvWalletHeight;
     private TextView tvWalletViewKey;
     private TextView tvWalletSpendKey;
     private ImageButton bCopyAddress;
@@ -99,6 +102,7 @@ public class GenerateReviewFragment extends Fragment {
         tvWalletViewKey = view.findViewById(R.id.tvWalletViewKey);
         tvWalletSpendKey = view.findViewById(R.id.tvWalletSpendKey);
         tvWalletMnemonic = view.findViewById(R.id.tvWalletMnemonic);
+        tvWalletHeight = view.findViewById(R.id.tvWalletHeight);
         bCopyAddress = view.findViewById(R.id.bCopyAddress);
         bAdvancedInfo = view.findViewById(R.id.bAdvancedInfo);
         llAdvancedInfo = view.findViewById(R.id.llAdvancedInfo);
@@ -188,11 +192,12 @@ public class GenerateReviewFragment extends Fragment {
     private class AsyncShow extends AsyncTask<String, Void, Boolean> {
         String name;
         String address;
+        long height;
         String seed;
         String viewKey;
         String spendKey;
         boolean isWatchOnly;
-        Wallet.Status status;
+        Wallet.Status walletStatus;
 
         boolean dialogOpened = false;
 
@@ -224,14 +229,15 @@ public class GenerateReviewFragment extends Fragment {
                 closeWallet = true;
             }
             name = wallet.getName();
-            status = wallet.getStatus();
+            walletStatus = wallet.getStatus();
-            if (status != Wallet.Status.Status_Ok) {
+            if (!walletStatus.isOk()) {
-                Timber.e(wallet.getErrorString());
+                Timber.e(walletStatus.getErrorString());
                 if (closeWallet) wallet.close();
                 return false;
             }
 
             address = wallet.getAddress();
+            height = wallet.getRestoreHeight();
             seed = wallet.getSeed();
             switch (wallet.getDeviceType()) {
                 case Device_Ledger:
@@ -264,6 +270,7 @@ public class GenerateReviewFragment extends Fragment {
                 llPassword.setVisibility(View.VISIBLE);
                 tvWalletPassword.setText(getPassword());
                 tvWalletAddress.setText(address);
+                tvWalletHeight.setText(NumberFormat.getInstance().format(height));
                 if (!seed.isEmpty()) {
                     llMnemonic.setVisibility(View.VISIBLE);
                     tvWalletMnemonic.setText(seed);
@@ -287,10 +294,11 @@ public class GenerateReviewFragment extends Fragment {
                         GenerateReviewFragment.VIEW_TYPE_ACCEPT.equals(type) ? Toolbar.BUTTON_NONE : Toolbar.BUTTON_BACK);
             } else {
                 // TODO show proper error message and/or end the fragment?
-                tvWalletAddress.setText(status.toString());
+                tvWalletAddress.setText(walletStatus.toString());
-                tvWalletMnemonic.setText(status.toString());
+                tvWalletHeight.setText(walletStatus.toString());
-                tvWalletViewKey.setText(status.toString());
+                tvWalletMnemonic.setText(walletStatus.toString());
-                tvWalletSpendKey.setText(status.toString());
+                tvWalletViewKey.setText(walletStatus.toString());
+                tvWalletSpendKey.setText(walletStatus.toString());
             }
             hideProgress();
         }
@@ -414,12 +422,13 @@ public class GenerateReviewFragment extends Fragment {
         }
 
         boolean ok = false;
-        if (wallet.getStatus() == Wallet.Status.Status_Ok) {
+        Wallet.Status walletStatus = wallet.getStatus();
+        if (walletStatus.isOk()) {
             wallet.setPassword(newPassword);
             wallet.store();
             ok = true;
         } else {
-            Timber.e(wallet.getErrorString());
+            Timber.e(walletStatus.getErrorString());
         }
         if (closeWallet) wallet.close();
         return ok;
@@ -621,8 +630,8 @@ public class GenerateReviewFragment extends Fragment {
                 return false;
             }
         });
-        // set FLAG_SECURE to prevent screenshots in Release Mode
+
-        if (!(BuildConfig.DEBUG && BuildConfig.FLAVOR_type.equals("alpha"))) {
+        if (Helper.preventScreenshot()) {
             openDialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
         }
 

app/src/main/java/com/m2049r/xmrwallet/LoginActivity.java

@@ -918,6 +918,16 @@ public class LoginActivity extends BaseActivity
 
     }
 
+    boolean checkAndCloseWallet(Wallet aWallet) {
+        Wallet.Status walletStatus = aWallet.getStatus();
+        if (!walletStatus.isOk()) {
+            Timber.e(walletStatus.getErrorString());
+            toast(walletStatus.getErrorString());
+        }
+        aWallet.close();
+        return walletStatus.isOk();
+    }
+
     @Override
     public void onGenerate(final String name, final String password) {
         createWallet(name, password,
@@ -930,17 +940,12 @@ public class LoginActivity extends BaseActivity
                     @Override
                     public boolean createWallet(File aFile, String password) {
                         NodeInfo currentNode = getNode();
+                        // get it from the connected node if we have one, and go back ca. 4 days
                         final long restoreHeight =
-                                (currentNode != null) ? currentNode.getHeight() - 20 : -1;
+                                (currentNode != null) ? currentNode.getHeight() - 2000 : -1;
                         Wallet newWallet = WalletManager.getInstance()
                                 .createWallet(aFile, password, MNEMONIC_LANGUAGE, restoreHeight);
-                        boolean success = (newWallet.getStatus() == Wallet.Status.Status_Ok);
+                        return checkAndCloseWallet(newWallet);
-                        if (!success) {
-                            Timber.e(newWallet.getErrorString());
-                            toast(newWallet.getErrorString());
-                        }
-                        newWallet.close();
-                        return success;
                     }
                 });
     }
@@ -959,13 +964,7 @@ public class LoginActivity extends BaseActivity
                     public boolean createWallet(File aFile, String password) {
                         Wallet newWallet = WalletManager.getInstance()
                                 .recoveryWallet(aFile, password, seed, restoreHeight);
-                        boolean success = (newWallet.getStatus() == Wallet.Status.Status_Ok);
+                        return checkAndCloseWallet(newWallet);
-                        if (!success) {
-                            Timber.e(newWallet.getErrorString());
-                            toast(newWallet.getErrorString());
-                        }
-                        newWallet.close();
-                        return success;
                     }
                 });
     }
@@ -985,13 +984,7 @@ public class LoginActivity extends BaseActivity
                         Wallet newWallet = WalletManager.getInstance()
                                 .createWalletFromDevice(aFile, password,
                                         restoreHeight, "Ledger");
-                        boolean success = (newWallet.getStatus() == Wallet.Status.Status_Ok);
+                        return checkAndCloseWallet(newWallet);
-                        if (!success) {
-                            Timber.e(newWallet.getErrorString());
-                            toast(newWallet.getErrorString());
-                        }
-                        newWallet.close();
-                        return success;
                     }
                 });
     }
@@ -1012,13 +1005,7 @@ public class LoginActivity extends BaseActivity
                         Wallet newWallet = WalletManager.getInstance()
                                 .createWalletWithKeys(aFile, password, MNEMONIC_LANGUAGE, restoreHeight,
                                         address, viewKey, spendKey);
-                        boolean success = (newWallet.getStatus() == Wallet.Status.Status_Ok);
+                        return checkAndCloseWallet(newWallet);
-                        if (!success) {
-                            Timber.e(newWallet.getErrorString());
-                            toast(newWallet.getErrorString());
-                        }
-                        newWallet.close();
-                        return success;
                     }
                 });
     }
@@ -1373,6 +1360,18 @@ public class LoginActivity extends BaseActivity
         if (Ledger.ENABLED)
             try {
                 Ledger.connect(usbManager, usbDevice);
+                if (!Ledger.check()) {
+                    Ledger.disconnect();
+                    runOnUiThread(new Runnable() {
+                        @Override
+                        public void run() {
+                            Toast.makeText(LoginActivity.this,
+                                    getString(R.string.toast_ledger_start_app, usbDevice.getProductName()),
+                                    Toast.LENGTH_SHORT)
+                                    .show();
+                        }
+                    });
+                } else {
                     registerDetachReceiver();
                     onLedgerAction();
                     runOnUiThread(new Runnable() {
@@ -1384,6 +1383,7 @@ public class LoginActivity extends BaseActivity
                                     .show();
                         }
                     });
+                }
             } catch (IOException ex) {
                 runOnUiThread(new Runnable() {
                     @Override

app/src/main/java/com/m2049r/xmrwallet/LoginFragment.java

@@ -439,18 +439,20 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
             }
             Collections.sort(nodesToTest, NodeInfo.BestNodeComparator);
             NodeInfo bestNode = nodesToTest.get(0);
-            if (bestNode.isValid())
+            if (bestNode.isValid()) {
+                activityCallback.setNode(bestNode);
                 return bestNode;
-            else
+            } else {
+                activityCallback.setNode(null);
                 return null;
             }
+        }
 
         @Override
         protected void onPostExecute(NodeInfo result) {
             if (!isAdded()) return;
             pbNode.setVisibility(View.INVISIBLE);
             llNode.setVisibility(View.VISIBLE);
-            activityCallback.setNode(result);
             if (result != null) {
                 Timber.d("found a good node %s", result.toString());
                 showNode(result);

app/src/main/java/com/m2049r/xmrwallet/NodeFragment.java

@@ -266,6 +266,7 @@ public class NodeFragment extends Fragment
                 seedList.add(new NodeInfo(new InetSocketAddress("198.74.231.92", 18080)));
                 seedList.add(new NodeInfo(new InetSocketAddress("195.154.123.123", 18080)));
                 seedList.add(new NodeInfo(new InetSocketAddress("212.83.172.165", 18080)));
+                seedList.add(new NodeInfo(new InetSocketAddress("192.110.160.146", 18080)));
                 d.seedPeers(seedList);
                 d.awaitTermination(NODES_TO_FIND);
             }
@@ -506,8 +507,8 @@ public class NodeFragment extends Fragment
                     });
                 }
             });
-            // set FLAG_SECURE to prevent screenshots in Release Mode
+
-            if (!(BuildConfig.DEBUG && BuildConfig.FLAVOR_type.equals("alpha"))) {
+            if (Helper.preventScreenshot()) {
                 editDialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
             }
 

app/src/main/java/com/m2049r/xmrwallet/SecureActivity.java

@@ -21,6 +21,7 @@ import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v7.app.AppCompatActivity;
 
+import com.m2049r.xmrwallet.util.Helper;
 import com.m2049r.xmrwallet.util.LocaleHelper;
 
 import static android.view.WindowManager.LayoutParams;
@@ -30,8 +31,7 @@ public abstract class SecureActivity extends AppCompatActivity {
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        // set FLAG_SECURE to prevent screenshots in Release Mode
+        if (Helper.preventScreenshot()) {
-        if (!(BuildConfig.DEBUG && BuildConfig.FLAVOR_type.equals("alpha"))) {
             getWindow().setFlags(LayoutParams.FLAG_SECURE, LayoutParams.FLAG_SECURE);
         }
     }

app/src/main/java/com/m2049r/xmrwallet/WalletActivity.java

@@ -628,23 +628,22 @@ public class WalletActivity extends BaseActivity implements WalletFragment.Liste
     }
 
     @Override
-    public void onWalletStarted(final Wallet.ConnectionStatus connStatus) {
+    public void onWalletStarted(final Wallet.Status walletStatus) {
         runOnUiThread(new Runnable() {
             public void run() {
                 dismissProgressDialog();
-                switch (connStatus) {
+                if (walletStatus == null) {
-                    case ConnectionStatus_Disconnected:
+                    // guess what went wrong
                     Toast.makeText(WalletActivity.this, getString(R.string.status_wallet_connect_failed), Toast.LENGTH_LONG).show();
-                        break;
+                } else {
-                    case ConnectionStatus_WrongVersion:
+                    if (Wallet.ConnectionStatus.ConnectionStatus_WrongVersion == walletStatus.getConnectionStatus())
                         Toast.makeText(WalletActivity.this, getString(R.string.status_wallet_connect_wrongversion), Toast.LENGTH_LONG).show();
-                        break;
+                    else if (!walletStatus.isOk())
-                    case ConnectionStatus_Connected:
+                        Toast.makeText(WalletActivity.this, walletStatus.getErrorString(), Toast.LENGTH_LONG).show();
-                        break;
                 }
             }
         });
-        if (connStatus != Wallet.ConnectionStatus.ConnectionStatus_Connected) {
+        if ((walletStatus == null) || (Wallet.ConnectionStatus.ConnectionStatus_Connected != walletStatus.getConnectionStatus())) {
             finish();
         } else {
             haveWallet = true;

app/src/main/java/com/m2049r/xmrwallet/WalletFragment.java

@@ -50,9 +50,8 @@ import com.m2049r.xmrwallet.widget.Toolbar;
 
 import java.text.NumberFormat;
 import java.util.ArrayList;
-import java.util.Date;
+import java.util.Arrays;
 import java.util.List;
-import java.util.stream.Collectors;
 
 import timber.log.Timber;
 
@@ -114,9 +113,12 @@ public class WalletFragment extends Fragment
         ivSynced = view.findViewById(R.id.ivSynced);
 
         sCurrency = view.findViewById(R.id.sCurrency);
-        ArrayAdapter currencyAdapter = ArrayAdapter.createFromResource(getContext(), R.array.currency, R.layout.item_spinner_balance);
+        List<String> currencies = new ArrayList<>();
-        currencyAdapter.setDropDownViewResource(R.layout.item_spinner_dropdown_item);
+        currencies.add(Helper.BASE_CRYPTO);
-        sCurrency.setAdapter(currencyAdapter);
+        currencies.addAll(Arrays.asList(getResources().getStringArray(R.array.currency)));
+        ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<>(getContext(), R.layout.item_spinner_balance, currencies);
+        spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        sCurrency.setAdapter(spinnerAdapter);
 
         bSend = view.findViewById(R.id.bSend);
         bReceive = view.findViewById(R.id.bReceive);
@@ -220,7 +222,7 @@ public class WalletFragment extends Fragment
         // at this point selection is XMR in case of error
         String displayB;
         double amountA = Helper.getDecimalAmount(unlockedBalance).doubleValue();
-        if (!Helper.CRYPTO.equals(balanceCurrency)) { // not XMR
+        if (!Helper.BASE_CRYPTO.equals(balanceCurrency)) { // not XMR
             double amountB = amountA * balanceRate;
             displayB = Helper.getFormattedAmount(amountB, false);
         } else { // XMR
@@ -229,7 +231,7 @@ public class WalletFragment extends Fragment
         showBalance(displayB);
     }
 
-    String balanceCurrency = Helper.CRYPTO;
+    String balanceCurrency = Helper.BASE_CRYPTO;
     double balanceRate = 1.0;
 
     private final ExchangeApi exchangeApi = Helper.getExchangeApi();
@@ -245,7 +247,7 @@ public class WalletFragment extends Fragment
             Timber.d(currency);
             if (!currency.equals(balanceCurrency) || (balanceRate <= 0)) {
                 showExchanging();
-                exchangeApi.queryExchangeRate(Helper.CRYPTO, currency,
+                exchangeApi.queryExchangeRate(Helper.BASE_CRYPTO, currency,
                         new ExchangeCallback() {
                             @Override
                             public void onSuccess(final ExchangeRate exchangeRate) {
@@ -301,10 +303,10 @@ public class WalletFragment extends Fragment
 
     public void exchange(final ExchangeRate exchangeRate) {
         hideExchanging();
-        if (!Helper.CRYPTO.equals(exchangeRate.getBaseCurrency())) {
+        if (!Helper.BASE_CRYPTO.equals(exchangeRate.getBaseCurrency())) {
             Timber.e("Not XMR");
             sCurrency.setSelection(0, true);
-            balanceCurrency = Helper.CRYPTO;
+            balanceCurrency = Helper.BASE_CRYPTO;
             balanceRate = 1.0;
         } else {
             int spinnerPosition = ((ArrayAdapter) sCurrency.getAdapter()).getPosition(exchangeRate.getQuoteCurrency());

app/src/main/java/com/m2049r/xmrwallet/data/BarcodeData.java

@@ -59,42 +59,36 @@ public class BarcodeData {
     final public Asset asset;
     final public String address;
     final public String addressName;
-    final public String paymentId;
     final public String amount;
     final public String description;
     final public Security security;
     final public String bip70;
 
     public BarcodeData(Asset asset, String address) {
-        this(asset, address, null, null, null, null, Security.NORMAL);
+        this(asset, address, null, null, null, Security.NORMAL);
     }
 
     public BarcodeData(Asset asset, String address, String amount) {
-        this(asset, address, null, null, null, amount, Security.NORMAL);
+        this(asset, address, null, null, amount, Security.NORMAL);
     }
 
     public BarcodeData(Asset asset, String address, String amount, String description, Security security) {
-        this(asset, address, null, null, description, amount, security);
+        this(asset, address, null, description, amount, security);
-    }
-
-    public BarcodeData(Asset asset, String address, String paymentId, String amount) {
-        this(asset, address, null, paymentId, null, amount, Security.NORMAL);
     }
 
     public BarcodeData(Asset asset, String address, String paymentId, String description, String amount) {
-        this(asset, address, null, paymentId, description, amount, Security.NORMAL);
+        this(asset, address, null, description, amount, Security.NORMAL);
     }
 
-    public BarcodeData(Asset asset, String address, String addressName, String paymentId, String description, String amount, Security security) {
+    public BarcodeData(Asset asset, String address, String addressName, String description, String amount, Security security) {
-        this(asset, address, addressName, null, paymentId, description, amount, security);
+        this(asset, address, addressName, null, description, amount, security);
     }
 
-    public BarcodeData(Asset asset, String address, String addressName, String bip70, String paymentId, String description, String amount, Security security) {
+    public BarcodeData(Asset asset, String address, String addressName, String bip70, String description, String amount, Security security) {
         this.asset = asset;
         this.address = address;
         this.bip70 = bip70;
         this.addressName = addressName;
-        this.paymentId = paymentId;
         this.description = description;
         this.amount = amount;
         this.security = security;
@@ -110,11 +104,6 @@ public class BarcodeData {
         StringBuilder sb = new StringBuilder();
         sb.append(BarcodeData.XMR_SCHEME).append(address);
         boolean first = true;
-        if ((paymentId != null) && !paymentId.isEmpty()) {
-            sb.append("?");
-            first = false;
-            sb.append(BarcodeData.XMR_PAYMENTID).append('=').append(paymentId);
-        }
         if ((description != null) && !description.isEmpty()) {
             sb.append(first ? "?" : "&");
             first = false;
@@ -185,8 +174,11 @@ public class BarcodeData {
         String address = monero.getPath();
 
         String paymentId = parms.get(XMR_PAYMENTID);
-        // deal with empty payment_id created by non-spec-conforming apps
+        // no support for payment ids!
-        if ((paymentId != null) && paymentId.isEmpty()) paymentId = null;
+        if (paymentId != null) {
+            Timber.e("no support for payment ids!");
+            return null;
+        }
 
         String description = parms.get(XMR_DESCRIPTION);
         String amount = parms.get(XMR_AMOUNT);
@@ -198,10 +190,6 @@ public class BarcodeData {
                 return null; // we have an amount but its not a number!
             }
         }
-        if ((paymentId != null) && !Wallet.isPaymentIdValid(paymentId)) {
-            Timber.d("paymentId invalid");
-            return null;
-        }
 
         if (!Wallet.isAddressValid(address)) {
             Timber.d("address invalid");
@@ -267,7 +255,7 @@ public class BarcodeData {
                 Timber.d("[%s] is not http url", bip70);
                 return null;
             }
-            return new BarcodeData(BarcodeData.Asset.BTC, null, null, bip70, null, description, null, Security.NORMAL);
+            return new BarcodeData(BarcodeData.Asset.BTC, null, null, bip70, description, null, Security.NORMAL);
         }
         if (!BitcoinAddressValidator.validate(address)) {
             Timber.d("BTC address (%s) invalid", address);

app/src/main/java/com/m2049r/xmrwallet/data/NodeInfo.java

@@ -235,8 +235,10 @@ public class NodeInfo extends Node {
                         String rpcVersion = json.getString("jsonrpc");
                         if (!RPC_VERSION.equals(rpcVersion))
                             return false;
-                        final JSONObject header = json.getJSONObject(
+                        final JSONObject result = json.getJSONObject("result");
-                                "result").getJSONObject("block_header");
+                        if (!result.has("credits")) // introduced in monero v0.15.0
+                            return false;
+                        final JSONObject header = result.getJSONObject("block_header");
                         height = header.getLong("height");
                         timestamp = header.getLong("timestamp");
                         majorVersion = header.getInt("major_version");

app/src/main/java/com/m2049r/xmrwallet/data/TxData.java

@@ -29,19 +29,16 @@ public class TxData implements Parcelable {
 
     public TxData(TxData txData) {
         this.dstAddr = txData.dstAddr;
-        this.paymentId = txData.paymentId;
         this.amount = txData.amount;
         this.mixin = txData.mixin;
         this.priority = txData.priority;
     }
 
     public TxData(String dstAddr,
-                  String paymentId,
                   long amount,
                   int mixin,
                   PendingTransaction.Priority priority) {
         this.dstAddr = dstAddr;
-        this.paymentId = paymentId;
         this.amount = amount;
         this.mixin = mixin;
         this.priority = priority;
@@ -51,10 +48,6 @@ public class TxData implements Parcelable {
         return dstAddr;
     }
 
-    public String getPaymentId() {
-        return paymentId;
-    }
-
     public long getAmount() {
         return amount;
     }
@@ -71,10 +64,6 @@ public class TxData implements Parcelable {
         this.dstAddr = dstAddr;
     }
 
-    public void setPaymentId(String paymentId) {
-        this.paymentId = paymentId;
-    }
-
     public void setAmount(long amount) {
         this.amount = amount;
     }
@@ -96,7 +85,6 @@ public class TxData implements Parcelable {
     }
 
     private String dstAddr;
-    private String paymentId;
     private long amount;
     private int mixin;
     private PendingTransaction.Priority priority;
@@ -106,7 +94,6 @@ public class TxData implements Parcelable {
     @Override
     public void writeToParcel(Parcel out, int flags) {
         out.writeString(dstAddr);
-        out.writeString(paymentId);
         out.writeLong(amount);
         out.writeInt(mixin);
         out.writeInt(priority.getValue());
@@ -125,7 +112,6 @@ public class TxData implements Parcelable {
 
     protected TxData(Parcel in) {
         dstAddr = in.readString();
-        paymentId = in.readString();
         amount = in.readLong();
         mixin = in.readInt();
         priority = PendingTransaction.Priority.fromInteger(in.readInt());
@@ -142,14 +128,12 @@ public class TxData implements Parcelable {
         StringBuffer sb = new StringBuffer();
         sb.append("dstAddr:");
         sb.append(dstAddr);
-        sb.append(",paymentId:");
-        sb.append(paymentId);
         sb.append(",amount:");
         sb.append(amount);
         sb.append(",mixin:");
         sb.append(mixin);
         sb.append(",priority:");
-        sb.append(String.valueOf(priority));
+        sb.append(priority);
         return sb.toString();
     }
 }

app/src/main/java/com/m2049r/xmrwallet/dialog/ProgressDialog.java

@@ -28,6 +28,7 @@ import android.widget.TextView;
 
 import com.m2049r.xmrwallet.BuildConfig;
 import com.m2049r.xmrwallet.R;
+import com.m2049r.xmrwallet.util.Helper;
 
 import java.util.Locale;
 
@@ -76,8 +77,7 @@ public class ProgressDialog extends AlertDialog {
 
         super.onCreate(savedInstanceState);
 
-        // set FLAG_SECURE to prevent screenshots in Release Mode
+        if (Helper.preventScreenshot()) {
-        if (!(BuildConfig.DEBUG && BuildConfig.FLAVOR_type.equals("alpha"))) {
             getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
         }
     }

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendAddressWizardFragment.java

@@ -31,7 +31,6 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
-import android.widget.Button;
 import android.widget.EditText;
 import android.widget.ImageButton;
 import android.widget.TextView;
@@ -86,12 +85,9 @@ public class SendAddressWizardFragment extends SendWizardFragment {
 
     private EditText etDummy;
     private TextInputLayout etAddress;
-    private TextInputLayout etPaymentId;
     private TextInputLayout etNotes;
-    private Button bPaymentId;
     private CardView cvScan;
     private View tvPaymentIdIntegrated;
-    private View llPaymentId;
     private TextView tvXmrTo;
     private View llXmrTo;
     private ImageButton bPasteAddress;
@@ -114,7 +110,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
         View view = inflater.inflate(R.layout.fragment_send_address, container, false);
 
         tvPaymentIdIntegrated = view.findViewById(R.id.tvPaymentIdIntegrated);
-        llPaymentId = view.findViewById(R.id.llPaymentId);
         llXmrTo = view.findViewById(R.id.llXmrTo);
         tvXmrTo = view.findViewById(R.id.tvXmrTo);
         tvXmrTo.setText(Html.fromHtml(getString(R.string.info_xmrto)));
@@ -140,29 +135,13 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                         next = null;
                     } else {
                         // maybe a bip72 or 70 URI
-                        String bip70 = PaymentProtocolHelper.getBip70(enteredAddress);
+                        final String bip70 = PaymentProtocolHelper.getBip70(enteredAddress);
                         if (bip70 != null) {
                             // looks good - resolve through xmr.to
                             processBip70(bip70);
-                            next = null;
-                        } else if (checkAddress()) {
-                            if (llPaymentId.getVisibility() == View.VISIBLE) {
-                                next = etPaymentId;
-                            } else {
-                                next = etNotes;
                         }
                     }
                 }
-                    if (next != null) {
-                        final View focus = next;
-                        etAddress.post(new Runnable() {
-                            @Override
-                            public void run() {
-                                focus.requestFocus();
-                            }
-                        });
-                    }
-                }
             }
         });
         etAddress.getEditText().addTextChangedListener(new TextWatcher() {
@@ -174,8 +153,7 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                 etAddress.setError(null);
                 if (isIntegratedAddress()) {
                     Timber.d("isIntegratedAddress");
-                    etPaymentId.getEditText().getText().clear();
+                    etAddress.setError(getString(R.string.info_paymentid_integrated));
-                    llPaymentId.setVisibility(View.INVISIBLE);
                     tvPaymentIdIntegrated.setVisibility(View.VISIBLE);
                     llXmrTo.setVisibility(View.INVISIBLE);
                     sendListener.setMode(SendFragment.Mode.XMR);
@@ -184,7 +162,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                     setBtcMode();
                 } else {
                     Timber.d("isStandardAddress or other");
-                    llPaymentId.setVisibility(View.VISIBLE);
                     tvPaymentIdIntegrated.setVisibility(View.INVISIBLE);
                     llXmrTo.setVisibility(View.INVISIBLE);
                     sendListener.setMode(SendFragment.Mode.XMR);
@@ -208,47 +185,21 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                 if (clip == null) return;
                 // clean it up
                 final String address = clip.replaceAll("[^0-9A-Z-a-z]", "");
-                if (Wallet.isAddressValid(address) || BitcoinAddressValidator.validate(address))
+                if (Wallet.isAddressValid(address) || BitcoinAddressValidator.validate(address)) {
-                    etAddress.getEditText().setText(address);
+                    final EditText et = etAddress.getEditText();
-                else
+                    et.setText(address);
+                    et.setSelection(et.getText().length());
+                    etAddress.requestFocus();
+                } else {
+                    final String bip70 = PaymentProtocolHelper.getBip70(clip);
+                    if (bip70 != null) {
+                        final EditText et = etAddress.getEditText();
+                        et.setText(clip);
+                        et.setSelection(et.getText().length());
+                        processBip70(bip70);
+                    } else
                         Toast.makeText(getActivity(), getString(R.string.send_address_invalid), Toast.LENGTH_SHORT).show();
                 }
-        });
-
-        etPaymentId = view.findViewById(R.id.etPaymentId);
-        etPaymentId.getEditText().setRawInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
-        etPaymentId.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
-            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
-                if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN))
-                        || (actionId == EditorInfo.IME_ACTION_NEXT)) {
-                    if (checkPaymentId()) {
-                        etNotes.requestFocus();
-                    }
-                    return true;
-                }
-                return false;
-            }
-        });
-        etPaymentId.getEditText().addTextChangedListener(new TextWatcher() {
-            @Override
-            public void afterTextChanged(Editable editable) {
-                etPaymentId.setError(null);
-            }
-
-            @Override
-            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
-            }
-
-            @Override
-            public void onTextChanged(CharSequence s, int start, int before, int count) {
-            }
-        });
-
-        bPaymentId = view.findViewById(R.id.bPaymentId);
-        bPaymentId.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                etPaymentId.getEditText().setText((Wallet.generatePaymentId()));
             }
         });
 
@@ -259,7 +210,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                 if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER) && (event.getAction() == KeyEvent.ACTION_DOWN))
                         || (actionId == EditorInfo.IME_ACTION_DONE)) {
                     etDummy.requestFocus();
-                    Helper.hideKeyboard(getActivity());
                     return true;
                 }
                 return false;
@@ -277,7 +227,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
         etDummy = view.findViewById(R.id.etDummy);
         etDummy.setRawInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
         etDummy.requestFocus();
-        Helper.hideKeyboard(getActivity());
 
         View tvNfc = view.findViewById(R.id.tvNfc);
         NfcManager manager = (NfcManager) getContext().getSystemService(Context.NFC_SERVICE);
@@ -289,8 +238,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
 
     private void setBtcMode() {
         Timber.d("setBtcMode");
-        etPaymentId.getEditText().getText().clear();
-        llPaymentId.setVisibility(View.INVISIBLE);
         tvPaymentIdIntegrated.setVisibility(View.INVISIBLE);
         llXmrTo.setVisibility(View.VISIBLE);
         sendListener.setMode(SendFragment.Mode.BTC);
@@ -345,7 +292,7 @@ public class SendAddressWizardFragment extends SendWizardFragment {
 
                 final BarcodeData barcodeData =
                         new BarcodeData(BarcodeData.Asset.BTC, address, null,
-                                resolvedBip70, null, null, String.valueOf(amount),
+                                resolvedBip70, null, String.valueOf(amount),
                                 BarcodeData.Security.BIP70);
                 etNotes.post(new Runnable() {
                     @Override
@@ -406,22 +353,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
         return BitcoinAddressValidator.validate(address);
     }
 
-    private boolean checkPaymentId() {
-        String paymentId = etPaymentId.getEditText().getText().toString();
-        boolean ok = paymentId.isEmpty() || Wallet.isPaymentIdValid(paymentId);
-        if (!ok) {
-            etPaymentId.setError(getString(R.string.receive_paymentid_invalid));
-        } else {
-            if (!paymentId.isEmpty() && isIntegratedAddress()) {
-                ok = false;
-                etPaymentId.setError(getString(R.string.receive_integrated_paymentid_invalid));
-            } else {
-                etPaymentId.setError(null);
-            }
-        }
-        return ok;
-    }
-
     private void shakeAddress() {
         etAddress.startAnimation(Helper.getShakeAnimation(getContext()));
     }
@@ -444,11 +375,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
             return false;
         }
 
-        if (!checkPaymentId()) {
-            etPaymentId.startAnimation(Helper.getShakeAnimation(getContext()));
-            return false;
-        }
-
         if (sendListener != null) {
             TxData txData = sendListener.getTxData();
             if (txData instanceof TxDataBtc) {
@@ -462,10 +388,8 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                     ((TxDataBtc) txData).setBip70(null);
                 }
                 txData.setDestinationAddress(null);
-                txData.setPaymentId("");
             } else {
                 txData.setDestinationAddress(etAddress.getEditText().getText().toString());
-                txData.setPaymentId(etPaymentId.getEditText().getText().toString());
             }
             txData.setUserNotes(new UserNotes(etNotes.getEditText().getText().toString()));
             txData.setPriority(PendingTransaction.Priority.Priority_Default);
@@ -528,14 +452,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
                 etAddress.setError(null);
             }
 
-            String scannedPaymentId = barcodeData.paymentId;
-            if (scannedPaymentId != null) {
-                etPaymentId.getEditText().setText(scannedPaymentId);
-                checkPaymentId();
-            } else {
-                etPaymentId.getEditText().getText().clear();
-                etPaymentId.setError(null);
-            }
             String scannedNotes = barcodeData.description;
             if (scannedNotes != null) {
                 etNotes.getEditText().setText(scannedNotes);
@@ -551,7 +467,6 @@ public class SendAddressWizardFragment extends SendWizardFragment {
     public void onResumeFragment() {
         super.onResumeFragment();
         Timber.d("onResumeFragment()");
-        Helper.hideKeyboard(getActivity());
         etDummy.requestFocus();
     }
 

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendAmountWizardFragment.java

@@ -21,8 +21,6 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageButton;
-import android.widget.ImageView;
-import android.widget.LinearLayout;
 import android.widget.TextView;
 
 import com.m2049r.xmrwallet.R;
@@ -30,8 +28,7 @@ import com.m2049r.xmrwallet.data.BarcodeData;
 import com.m2049r.xmrwallet.data.TxData;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.util.Helper;
-import com.m2049r.xmrwallet.widget.ExchangeTextView;
+import com.m2049r.xmrwallet.widget.ExchangeEditText;
-import com.m2049r.xmrwallet.widget.NumberPadView;
 
 import timber.log.Timber;
 
@@ -59,8 +56,7 @@ public class SendAmountWizardFragment extends SendWizardFragment {
     }
 
     private TextView tvFunds;
-    private ExchangeTextView evAmount;
+    private ExchangeEditText etAmount;
-    private View llAmount;
     private View rlSweep;
     private ImageButton ibSweep;
 
@@ -75,12 +71,9 @@ public class SendAmountWizardFragment extends SendWizardFragment {
         View view = inflater.inflate(R.layout.fragment_send_amount, container, false);
 
         tvFunds = view.findViewById(R.id.tvFunds);
-
+        etAmount = view.findViewById(R.id.etAmount);
-        evAmount = view.findViewById(R.id.evAmount);
-        ((NumberPadView) view.findViewById(R.id.numberPad)).setListener(evAmount);
-
         rlSweep = view.findViewById(R.id.rlSweep);
-        llAmount = view.findViewById(R.id.llAmount);
+
         view.findViewById(R.id.ivSweep).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -97,8 +90,7 @@ public class SendAmountWizardFragment extends SendWizardFragment {
             }
         });
 
-        Helper.hideKeyboard(getActivity());
+        etAmount.requestFocus();
-
         return view;
     }
 
@@ -107,11 +99,11 @@ public class SendAmountWizardFragment extends SendWizardFragment {
     private void sweepAll(boolean spendAllMode) {
         if (spendAllMode) {
             ibSweep.setVisibility(View.INVISIBLE);
-            llAmount.setVisibility(View.GONE);
+            etAmount.setVisibility(View.GONE);
             rlSweep.setVisibility(View.VISIBLE);
         } else {
             ibSweep.setVisibility(View.VISIBLE);
-            llAmount.setVisibility(View.VISIBLE);
+            etAmount.setVisibility(View.VISIBLE);
             rlSweep.setVisibility(View.GONE);
         }
         this.spendAllMode = spendAllMode;
@@ -124,12 +116,12 @@ public class SendAmountWizardFragment extends SendWizardFragment {
                 sendListener.getTxData().setAmount(Wallet.SWEEP_ALL);
             }
         } else {
-            if (!evAmount.validate(maxFunds)) {
+            if (!etAmount.validate(maxFunds, 0)) {
                 return false;
             }
 
             if (sendListener != null) {
-                String xmr = evAmount.getAmount();
+                String xmr = etAmount.getNativeAmount();
                 if (xmr != null) {
                     sendListener.getTxData().setAmount(Wallet.getAmountFromString(xmr));
                 } else {
@@ -146,7 +138,7 @@ public class SendAmountWizardFragment extends SendWizardFragment {
     public void onResumeFragment() {
         super.onResumeFragment();
         Timber.d("onResumeFragment()");
-        Helper.hideKeyboard(getActivity());
+        Helper.showKeyboard(getActivity());
         final long funds = getTotalFunds();
         maxFunds = 1.0 * funds / 1000000000000L;
         if (!sendListener.getActivityCallback().isStreetMode()) {
@@ -156,11 +148,11 @@ public class SendAmountWizardFragment extends SendWizardFragment {
             tvFunds.setText(getString(R.string.send_available,
                     getString(R.string.unknown_amount)));
         }
-        // getAmount is null if exchange is in progress
+        // getNativeAmount is null if exchange is in progress
-        if ((evAmount.getAmount() != null) && evAmount.getAmount().isEmpty()) {
+        if ((etAmount.getNativeAmount() != null) && etAmount.getNativeAmount().isEmpty()) {
             final BarcodeData data = sendListener.popBarcodeData();
             if ((data != null) && (data.amount != null)) {
-                evAmount.setAmount(data.amount);
+                etAmount.setAmount(data.amount);
             }
         }
     }

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendBtcAmountWizardFragment.java

@@ -31,8 +31,8 @@ import com.m2049r.xmrwallet.data.TxDataBtc;
 import com.m2049r.xmrwallet.model.Wallet;
 import com.m2049r.xmrwallet.util.Helper;
 import com.m2049r.xmrwallet.util.OkHttpHelper;
-import com.m2049r.xmrwallet.widget.ExchangeBtcTextView;
+import com.m2049r.xmrwallet.widget.ExchangeEditText;
-import com.m2049r.xmrwallet.widget.NumberPadView;
+import com.m2049r.xmrwallet.widget.ExchangeOtherEditText;
 import com.m2049r.xmrwallet.widget.SendProgressView;
 import com.m2049r.xmrwallet.xmrto.XmrToError;
 import com.m2049r.xmrwallet.xmrto.XmrToException;
@@ -62,8 +62,7 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
     }
 
     private TextView tvFunds;
-    private ExchangeBtcTextView evAmount;
+    private ExchangeOtherEditText etAmount;
-    private NumberPadView numberPad;
 
     private TextView tvXmrToParms;
     private SendProgressView evParams;
@@ -86,24 +85,20 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
 
         tvXmrToParms = view.findViewById(R.id.tvXmrToParms);
 
-        evAmount = view.findViewById(R.id.evAmount);
+        etAmount = view.findViewById(R.id.etAmount);
-        numberPad = view.findViewById(R.id.numberPad);
+        etAmount.requestFocus();
-        numberPad.setListener(evAmount);
-
-        Helper.hideKeyboard(getActivity());
-
         return view;
     }
 
 
     @Override
     public boolean onValidateFields() {
-        if (!evAmount.validate(maxBtc, minBtc)) {
+        if (!etAmount.validate(maxBtc, minBtc)) {
             return false;
         }
         if (sendListener != null) {
             TxDataBtc txDataBtc = (TxDataBtc) sendListener.getTxData();
-            String btcString = evAmount.getAmount();
+            String btcString = etAmount.getNativeAmount();
             if (btcString != null) {
                 try {
                     double btc = Double.parseDouble(btcString);
@@ -122,10 +117,12 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
 
     private void setBip70Mode() {
         TxDataBtc txDataBtc = (TxDataBtc) sendListener.getTxData();
-        if (txDataBtc.getBip70() != null) {
+        if (txDataBtc.getBip70() == null) {
-            numberPad.setVisibility(View.INVISIBLE);
+            etAmount.setEditable(true);
+            Helper.showKeyboard(getActivity());
         } else {
-            numberPad.setVisibility(View.VISIBLE);
+            etAmount.setEditable(false);
+            Helper.hideKeyboard(getActivity());
         }
     }
 
@@ -141,7 +138,6 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
     public void onResumeFragment() {
         super.onResumeFragment();
         Timber.d("onResumeFragment()");
-        Helper.hideKeyboard(getActivity());
         final long funds = getTotalFunds();
         if (!sendListener.getActivityCallback().isStreetMode()) {
             tvFunds.setText(getString(R.string.send_available,
@@ -153,7 +149,7 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
         final BarcodeData data = sendListener.popBarcodeData();
         if (data != null) {
             if (data.amount != null) {
-                evAmount.setAmount(data.amount);
+                etAmount.setAmount(data.amount);
             }
         }
         setBip70Mode();
@@ -171,7 +167,7 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
         getView().post(new Runnable() {
             @Override
             public void run() {
-                evAmount.setRate(1.0d / orderParameters.getPrice());
+                etAmount.setExchangeRate(1.0d / orderParameters.getPrice());
                 NumberFormat df = NumberFormat.getInstance(Locale.US);
                 df.setMaximumFractionDigits(6);
                 String min = df.format(orderParameters.getLowerLimit());
@@ -211,7 +207,7 @@ public class SendBtcAmountWizardFragment extends SendWizardFragment {
     }
 
     private void processOrderParmsError(final Exception ex) {
-        evAmount.setRate(0);
+        etAmount.setExchangeRate(0);
         orderParameters = null;
         maxBtc = 0;
         minBtc = 0;

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendBtcConfirmWizardFragment.java

@@ -437,8 +437,8 @@ public class SendBtcConfirmWizardFragment extends SendWizardFragment implements
                 return false;
             }
         });
-        // set FLAG_SECURE to prevent screenshots in Release Mode
+
-        if (!(BuildConfig.DEBUG && BuildConfig.FLAVOR_type.equals("alpha"))) {
+        if (Helper.preventScreenshot()) {
             passwordDialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
         }
 
@@ -457,8 +457,7 @@ public class SendBtcConfirmWizardFragment extends SendWizardFragment implements
         }
         showProgress(3, getString(R.string.label_send_progress_create_tx));
         TxData txData = sendListener.getTxData();
-        txData.setDestinationAddress(xmrtoStatus.getXmrReceivingAddress());
+        txData.setDestinationAddress(xmrtoStatus.getXmrReceivingSubaddress());
-        txData.setPaymentId(xmrtoStatus.getXmrRequiredPaymentIdShort());
         txData.setAmount(Wallet.getAmountFromDouble(xmrtoStatus.getXmrAmountTotal()));
         getActivityCallback().onPrepareSend(xmrtoStatus.getUuid(), txData);
     }

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendBtcSuccessWizardFragment.java

@@ -138,12 +138,6 @@ public class SendBtcSuccessWizardFragment extends SendWizardFragment {
 
         btcData = (TxDataBtc) sendListener.getTxData();
         tvTxAddress.setText(btcData.getDestinationAddress());
-        String paymentId = btcData.getPaymentId();
-        if ((paymentId != null) && (!paymentId.isEmpty())) {
-            tvTxPaymentId.setText(btcData.getPaymentId());
-        } else {
-            tvTxPaymentId.setText("-");
-        }
 
         final PendingTx committedTx = sendListener.getCommittedTx();
         if (committedTx != null) {

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendConfirmWizardFragment.java

@@ -70,7 +70,6 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
     }
 
     private TextView tvTxAddress;
-    private TextView tvTxPaymentId;
     private TextView tvTxNotes;
     private TextView tvTxAmount;
     private TextView tvTxFee;
@@ -90,7 +89,6 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
                 R.layout.fragment_send_confirm, container, false);
 
         tvTxAddress = view.findViewById(R.id.tvTxAddress);
-        tvTxPaymentId = view.findViewById(R.id.tvTxPaymentId);
         tvTxNotes = view.findViewById(R.id.tvTxNotes);
         tvTxAmount = view.findViewById(R.id.tvTxAmount);
         tvTxFee = view.findViewById(R.id.tvTxFee);
@@ -192,12 +190,6 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
 
         final TxData txData = sendListener.getTxData();
         tvTxAddress.setText(txData.getDestinationAddress());
-        String paymentId = txData.getPaymentId();
-        if ((paymentId != null) && (!paymentId.isEmpty())) {
-            tvTxPaymentId.setText(txData.getPaymentId());
-        } else {
-            tvTxPaymentId.setText("-");
-        }
         UserNotes notes = sendListener.getTxData().getUserNotes();
         if ((notes != null) && (!notes.note.isEmpty())) {
             tvTxNotes.setText(notes.note);
@@ -324,8 +316,8 @@ public class SendConfirmWizardFragment extends SendWizardFragment implements Sen
                 return false;
             }
         });
-        // set FLAG_SECURE to prevent screenshots in Release Mode
+
-        if (!(BuildConfig.DEBUG && BuildConfig.FLAVOR_type.equals("alpha"))) {
+        if (Helper.preventScreenshot()) {
             passwordDialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
         }
 

app/src/main/java/com/m2049r/xmrwallet/fragment/send/SendSuccessWizardFragment.java

@@ -111,12 +111,6 @@ public class SendSuccessWizardFragment extends SendWizardFragment {
 
         final TxData txData = sendListener.getTxData();
         tvTxAddress.setText(txData.getDestinationAddress());
-        String paymentId = txData.getPaymentId();
-        if ((paymentId != null) && (!paymentId.isEmpty())) {
-            tvTxPaymentId.setText(txData.getPaymentId());
-        } else {
-            tvTxPaymentId.setText("-");
-        }
 
         final PendingTx committedTx = sendListener.getCommittedTx();
         if (committedTx != null) {

app/src/main/java/com/m2049r/xmrwallet/ledger/Instruction.java

@@ -134,6 +134,10 @@ public enum Instruction {
         return value;
     }
 
+    public byte getByteValue() {
+        return (byte) (value & 0xFF);
+    }
+
     private int value;
 
     Instruction(int value) {

app/src/main/java/com/m2049r/xmrwallet/ledger/Ledger.java

@@ -27,9 +27,11 @@ import com.btchip.BTChipException;
 import com.btchip.comm.BTChipTransport;
 import com.btchip.comm.android.BTChipTransportAndroidHID;
 import com.m2049r.xmrwallet.BuildConfig;
+import com.m2049r.xmrwallet.model.WalletManager;
 import com.m2049r.xmrwallet.util.Helper;
 
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 
 import timber.log.Timber;
 
@@ -40,9 +42,11 @@ public class Ledger {
     static public final int LOOKAHEAD_SUBADDRESSES = 20;
     static public final String SUBADDRESS_LOOKAHEAD = LOOKAHEAD_ACCOUNTS + ":" + LOOKAHEAD_SUBADDRESSES;
 
+    private static final byte PROTOCOL_VERSION = 0x02;
     public static final int SW_OK = 0x9000;
     public static final int SW_INS_NOT_SUPPORTED = 0x6D00;
     public static final int OK[] = {SW_OK};
+    public static final int MINIMUM_LEDGER_VERSION = (1 << 16) + (3 << 8) + (1); // 1.3.1
 
     public static UsbDevice findDevice(UsbManager usbManager) {
         if (!ENABLED) return null;
@@ -89,6 +93,21 @@ public class Ledger {
         }
     }
 
+    static public boolean check() {
+        if (Instance == null) return false;
+        byte[] moneroVersion = WalletManager.moneroVersion().getBytes(StandardCharsets.US_ASCII);
+
+        try {
+            byte[] resp = Instance.exchangeApduNoOpt(Instruction.INS_RESET, moneroVersion, OK);
+            int deviceVersion = (resp[0] << 16) + (resp[1] << 8) + (resp[2]);
+            if (deviceVersion < MINIMUM_LEDGER_VERSION)
+                return false;
+        } catch (BTChipException ex) { // comm error - probably wrong app started on device
+            return false;
+        }
+        return true;
+    }
+
     final private BTChipTransport transport;
     final private String name;
     private int lastSW = 0;
@@ -112,7 +131,7 @@ public class Ledger {
     synchronized private byte[] exchangeRaw(byte[] apdu) {
         if (transport == null)
             throw new IllegalStateException("No transport (probably closed previously)");
-        Timber.i("exchangeRaw %02x", apdu[1]);
+        Timber.d("exchangeRaw %02x", apdu[1]);
         Instruction ins = Instruction.fromByte(apdu[1]);
         if (listener != null) listener.onInstructionSend(ins, apdu);
         sniffOut(ins, apdu);
@@ -120,7 +139,6 @@ public class Ledger {
         if (listener != null) listener.onInstructionReceive(ins, data);
         sniffIn(data);
         return data;
-
     }
 
     private byte[] exchange(byte[] apdu) throws BTChipException {
@@ -148,68 +166,19 @@ public class Ledger {
         throw new BTChipException("Invalid status", lastSW);
     }
 
-    private byte[] exchangeApdu(byte cla, byte ins, byte p1, byte p2, byte[] data, int acceptedSW[]) throws BTChipException {
+    private byte[] exchangeApduNoOpt(Instruction instruction, byte[] data, int acceptedSW[])
-        byte[] apdu = new byte[data.length + 5];
+            throws BTChipException {
-        apdu[0] = cla;
+        byte[] apdu = new byte[data.length + 6];
-        apdu[1] = ins;
+        apdu[0] = PROTOCOL_VERSION;
-        apdu[2] = p1;
+        apdu[1] = instruction.getByteValue();
-        apdu[3] = p2;
+        apdu[2] = 0; // p1
-        apdu[4] = (byte) (data.length);
+        apdu[3] = 0; // p2
-        System.arraycopy(data, 0, apdu, 5, data.length);
+        apdu[4] = (byte) (data.length + 1); // +1 because the opt byte is part of the data
+        apdu[5] = 0; // opt
+        System.arraycopy(data, 0, apdu, 6, data.length);
         return exchangeCheck(apdu, acceptedSW);
     }
 
-    private byte[] exchangeApdu(byte cla, byte ins, byte p1, byte p2, int length, int acceptedSW[]) throws BTChipException {
-        byte[] apdu = new byte[5];
-        apdu[0] = cla;
-        apdu[1] = ins;
-        apdu[2] = p1;
-        apdu[3] = p2;
-        apdu[4] = (byte) (length);
-        return exchangeCheck(apdu, acceptedSW);
-    }
-
-    private byte[] exchangeApduSplit(byte cla, byte ins, byte p1, byte p2, byte[] data, int acceptedSW[]) throws BTChipException {
-        int offset = 0;
-        byte[] result = null;
-        while (offset < data.length) {
-            int blockLength = ((data.length - offset) > 255 ? 255 : data.length - offset);
-            byte[] apdu = new byte[blockLength + 5];
-            apdu[0] = cla;
-            apdu[1] = ins;
-            apdu[2] = p1;
-            apdu[3] = p2;
-            apdu[4] = (byte) (blockLength);
-            System.arraycopy(data, offset, apdu, 5, blockLength);
-            result = exchangeCheck(apdu, acceptedSW);
-            offset += blockLength;
-        }
-        return result;
-    }
-
-    private byte[] exchangeApduSplit2(byte cla, byte ins, byte p1, byte p2, byte[] data, byte[] data2, int acceptedSW[]) throws BTChipException {
-        int offset = 0;
-        byte[] result = null;
-        int maxBlockSize = 255 - data2.length;
-        while (offset < data.length) {
-            int blockLength = ((data.length - offset) > maxBlockSize ? maxBlockSize : data.length - offset);
-            boolean lastBlock = ((offset + blockLength) == data.length);
-            byte[] apdu = new byte[blockLength + 5 + (lastBlock ? data2.length : 0)];
-            apdu[0] = cla;
-            apdu[1] = ins;
-            apdu[2] = p1;
-            apdu[3] = p2;
-            apdu[4] = (byte) (blockLength + (lastBlock ? data2.length : 0));
-            System.arraycopy(data, offset, apdu, 5, blockLength);
-            if (lastBlock) {
-                System.arraycopy(data2, 0, apdu, 5 + blockLength, data2.length);
-            }
-            result = exchangeCheck(apdu, acceptedSW);
-            offset += blockLength;
-        }
-        return result;
-    }
-
     public interface Listener {
         void onInstructionSend(Instruction ins, byte[] apdu);
 
@@ -251,7 +220,6 @@ public class Ledger {
         if (ins == Instruction.INS_GET_KEY) {
             snoopKey = (apdu[2] == 2);
         }
-
     }
 
     private void sniffIn(byte[] data) {

app/src/main/java/com/m2049r/xmrwallet/model/Wallet.java

@@ -16,6 +16,9 @@
 
 package com.m2049r.xmrwallet.model;
 
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+
 import com.m2049r.xmrwallet.data.TxData;
 
 import java.io.File;
@@ -32,6 +35,47 @@ public class Wallet {
         System.loadLibrary("monerujo");
     }
 
+    static public class Status {
+        Status(int status, String errorString) {
+            this.status = StatusEnum.values()[status];
+            this.errorString = errorString;
+        }
+
+        final private StatusEnum status;
+        final private String errorString;
+        @Nullable
+        private ConnectionStatus connectionStatus; // optional
+
+        public StatusEnum getStatus() {
+            return status;
+        }
+
+        public String getErrorString() {
+            return errorString;
+        }
+
+        public void setConnectionStatus(@Nullable ConnectionStatus connectionStatus) {
+            this.connectionStatus = connectionStatus;
+        }
+
+        @Nullable
+        public ConnectionStatus getConnectionStatus() {
+            return connectionStatus;
+        }
+
+        public boolean isOk() {
+            return (getStatus() == StatusEnum.Status_Ok)
+                    && ((getConnectionStatus() == null) ||
+                    (getConnectionStatus() == ConnectionStatus.ConnectionStatus_Connected));
+        }
+
+        @Override
+        @NonNull
+        public String toString() {
+            return "Wallet.Status: (" + status + "/" + errorString + ", " + connectionStatus;
+        }
+    }
+
     private int accountIndex = 0;
 
     public int getAccountIndex() {
@@ -66,7 +110,7 @@ public class Wallet {
         Device_Ledger
     }
 
-    public enum Status {
+    public enum StatusEnum {
         Status_Ok,
         Status_Error,
         Status_Critical
@@ -85,12 +129,16 @@ public class Wallet {
     public native void setSeedLanguage(String language);
 
     public Status getStatus() {
-        return Wallet.Status.values()[getStatusJ()];
+        return statusWithErrorString();
     }
 
-    private native int getStatusJ();
+    public Status getFullStatus() {
+        Wallet.Status walletStatus = statusWithErrorString();
+        walletStatus.setConnectionStatus(getConnectionStatus());
+        return walletStatus;
+    }
 
-    public native String getErrorString();
+    private native Status statusWithErrorString();
 
     public native boolean setPassword(String password);
 
@@ -250,22 +298,21 @@ public class Wallet {
     public PendingTransaction createTransaction(TxData txData) {
         return createTransaction(
                 txData.getDestinationAddress(),
-                txData.getPaymentId(),
                 txData.getAmount(),
                 txData.getMixin(),
                 txData.getPriority());
     }
 
-    public PendingTransaction createTransaction(String dst_addr, String payment_id,
+    public PendingTransaction createTransaction(String dst_addr,
                                                 long amount, int mixin_count,
                                                 PendingTransaction.Priority priority) {
         disposePendingTransaction();
         int _priority = priority.getValue();
         long txHandle =
                 (amount == SWEEP_ALL ?
-                        createSweepTransaction(dst_addr, payment_id, mixin_count, _priority,
+                        createSweepTransaction(dst_addr, "", mixin_count, _priority,
                                 accountIndex) :
-                        createTransactionJ(dst_addr, payment_id, amount, mixin_count, _priority,
+                        createTransactionJ(dst_addr, "", amount, mixin_count, _priority,
                                 accountIndex));
         pendingTransaction = new PendingTransaction(txHandle);
         return pendingTransaction;

app/src/main/java/com/m2049r/xmrwallet/model/WalletManager.java

@@ -95,7 +95,7 @@ public class WalletManager {
         long walletHandle = createWalletJ(aFile.getAbsolutePath(), password, language, getNetworkType().getValue());
         Wallet wallet = new Wallet(walletHandle);
         manageWallet(wallet);
-        if (wallet.getStatus() == Wallet.Status.Status_Ok) {
+        if (wallet.getStatus().isOk()) {
             // (Re-)Estimate restore height based on what we know
             final long oldHeight = wallet.getRestoreHeight();
             final long restoreHeight =
@@ -287,7 +287,8 @@ public class WalletManager {
             this.daemonAddress = null;
             this.daemonUsername = "";
             this.daemonPassword = "";
-            setDaemonAddressJ("");
+            //setDaemonAddressJ(""); // don't disconnect as monero code blocks for many seconds!
+            //TODO: need to do something about that later
         }
     }
 
@@ -353,4 +354,6 @@ public class WalletManager {
     static public native void logWarning(String category, String message);
 
     static public native void logError(String category, String message);
+
+    static public native String moneroVersion();
 }

app/src/main/java/com/m2049r/xmrwallet/service/WalletService.java

@@ -31,6 +31,7 @@ import android.os.IBinder;
 import android.os.Looper;
 import android.os.Message;
 import android.os.Process;
+import android.support.annotation.Nullable;
 import android.support.annotation.RequiresApi;
 import android.support.v4.app.NotificationCompat;
 
@@ -220,7 +221,7 @@ public class WalletService extends Service {
 
         void onSendTransactionFailed(String error);
 
-        void onWalletStarted(Wallet.ConnectionStatus walletStatus);
+        void onWalletStarted(Wallet.Status walletStatus);
 
         void onWalletOpen(Wallet.Device device);
     }
@@ -287,9 +288,9 @@ public class WalletService extends Service {
                         if (walletId != null) {
                             showProgress(getString(R.string.status_wallet_loading));
                             showProgress(10);
-                            Wallet.ConnectionStatus connStatus = start(walletId, walletPw);
+                            Wallet.Status walletStatus = start(walletId, walletPw);
-                            if (observer != null) observer.onWalletStarted(connStatus);
+                            if (observer != null) observer.onWalletStarted(walletStatus);
-                            if (connStatus != Wallet.ConnectionStatus.ConnectionStatus_Connected) {
+                            if ((walletStatus == null) || !walletStatus.isOk()) {
                                 errorState = true;
                                 stop();
                             }
@@ -300,7 +301,7 @@ public class WalletService extends Service {
                         boolean rc = myWallet.store();
                         Timber.d("wallet stored: %s with rc=%b", myWallet.getName(), rc);
                         if (!rc) {
-                            Timber.w("Wallet store failed: %s", myWallet.getErrorString());
+                            Timber.w("Wallet store failed: %s", myWallet.getStatus().getErrorString());
                         }
                         if (observer != null) observer.onWalletStored(rc);
                     } else if (cmd.equals(REQUEST_CMD_TX)) {
@@ -362,7 +363,7 @@ public class WalletService extends Service {
                             boolean rc = myWallet.store();
                             Timber.d("wallet stored: %s with rc=%b", myWallet.getName(), rc);
                             if (!rc) {
-                                Timber.w("Wallet store failed: %s", myWallet.getErrorString());
+                                Timber.w("Wallet store failed: %s", myWallet.getStatus().getErrorString());
                             }
                             if (observer != null) observer.onWalletStored(rc);
                             listener.updated = true;
@@ -464,7 +465,8 @@ public class WalletService extends Service {
         return true; // true is important so that onUnbind is also called next time
     }
 
-    private Wallet.ConnectionStatus start(String walletName, String walletPassword) {
+    @Nullable
+    private Wallet.Status start(String walletName, String walletPassword) {
         Timber.d("start()");
         startNotfication();
         showProgress(getString(R.string.status_wallet_loading));
@@ -472,11 +474,11 @@ public class WalletService extends Service {
         if (listener == null) {
             Timber.d("start() loadWallet");
             Wallet aWallet = loadWallet(walletName, walletPassword);
-            Wallet.ConnectionStatus connStatus = Wallet.ConnectionStatus.ConnectionStatus_Disconnected;
+            if (aWallet == null) return null;
-            if (aWallet != null) connStatus = aWallet.getConnectionStatus();
+            Wallet.Status walletStatus = aWallet.getFullStatus();
-            if (connStatus != Wallet.ConnectionStatus.ConnectionStatus_Connected) {
+            if (!walletStatus.isOk()) {
-                if (aWallet != null) aWallet.close();
+                aWallet.close();
-                return connStatus;
+                return walletStatus;
             }
             listener = new MyWalletListener();
             listener.start();
@@ -487,7 +489,7 @@ public class WalletService extends Service {
         // if we try to refresh the history here we get occasional segfaults!
         // doesnt matter since we update as soon as we get a new block anyway
         Timber.d("start() done");
-        return Wallet.ConnectionStatus.ConnectionStatus_Connected;
+        return getWallet().getFullStatus();
     }
 
     public void stop() {
@@ -532,10 +534,9 @@ public class WalletService extends Service {
             wallet = walletMgr.openWallet(path, walletPassword);
             showProgress(60);
             Timber.d("wallet opened");
-            Wallet.Status status = wallet.getStatus();
+            Wallet.Status walletStatus = wallet.getStatus();
-            Timber.d("wallet status is %s", status);
+            if (!walletStatus.isOk()) {
-            if (status != Wallet.Status.Status_Ok) {
+                Timber.d("wallet status is %s", walletStatus);
-                Timber.d("wallet status is %s", status);
                 WalletManager.getInstance().close(wallet); // TODO close() failed?
                 wallet = null;
                 // TODO what do we do with the progress??

app/src/main/java/com/m2049r/xmrwallet/service/exchange/ecb/ExchangeApiImpl.java

@@ -0,0 +1,215 @@
+/*
+ * Copyright (c) 2019 m2049r@monerujo.io
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// https://developer.android.com/training/basics/network-ops/xml
+
+package com.m2049r.xmrwallet.service.exchange.ecb;
+
+import android.support.annotation.NonNull;
+import android.support.annotation.VisibleForTesting;
+
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeApi;
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeCallback;
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeException;
+import com.m2049r.xmrwallet.service.exchange.api.ExchangeRate;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.SAXException;
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+import java.util.TimeZone;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import okhttp3.Call;
+import okhttp3.HttpUrl;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import timber.log.Timber;
+
+public class ExchangeApiImpl implements ExchangeApi {
+    @NonNull
+    private final OkHttpClient okHttpClient;
+    @NonNull
+    private final HttpUrl baseUrl;
+
+    //so we can inject the mockserver url
+    @VisibleForTesting
+    public ExchangeApiImpl(@NonNull final OkHttpClient okHttpClient, @NonNull final HttpUrl baseUrl) {
+        this.okHttpClient = okHttpClient;
+        this.baseUrl = baseUrl;
+    }
+
+    public ExchangeApiImpl(@NonNull final OkHttpClient okHttpClient) {
+        this(okHttpClient, HttpUrl.parse("https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml"));
+        // data is daily and is refreshed around 16:00 CET every working day
+    }
+
+    public static boolean isSameDay(Calendar calendar, Calendar anotherCalendar) {
+        return (calendar.get(Calendar.YEAR) == anotherCalendar.get(Calendar.YEAR)) &&
+                (calendar.get(Calendar.DAY_OF_YEAR) == anotherCalendar.get(Calendar.DAY_OF_YEAR));
+    }
+
+    @Override
+    public void queryExchangeRate(@NonNull final String baseCurrency, @NonNull final String quoteCurrency,
+                                  @NonNull final ExchangeCallback callback) {
+        if (!baseCurrency.equals("EUR")) {
+            callback.onError(new IllegalArgumentException("Only EUR supported as base"));
+            return;
+        }
+
+        if (baseCurrency.equals(quoteCurrency)) {
+            callback.onSuccess(new ExchangeRateImpl(quoteCurrency, 1.0, new Date()));
+            return;
+        }
+
+        if (fetchDate != null) { // we have data
+            boolean useCache = false;
+            // figure out if we can use the cached values
+            // data is daily and is refreshed around 16:00 CET every working day
+            Calendar now = Calendar.getInstance(TimeZone.getTimeZone("CET"));
+
+            int fetchWeekday = fetchDate.get(Calendar.DAY_OF_WEEK);
+            int fetchDay = fetchDate.get(Calendar.DAY_OF_YEAR);
+            int fetchHour = fetchDate.get(Calendar.HOUR_OF_DAY);
+
+            int today = now.get(Calendar.DAY_OF_YEAR);
+            int nowHour = now.get(Calendar.HOUR_OF_DAY);
+
+            if (
+                // was it fetched today before 16:00? assume no new data iff now < 16:00 as well
+                    ((today == fetchDay) && (fetchHour < 16) && (nowHour < 16))
+                            // was it fetched after, 17:00? we can assume there is no newer data
+                            || ((today == fetchDay) && (fetchHour > 17))
+                            || ((today == fetchDay + 1) && (fetchHour > 17) && (nowHour < 16))
+                            // is the data itself from today? there can be no newer data
+                            || (fxDate.get(Calendar.DAY_OF_YEAR) == today)
+                            // was it fetched Sat/Sun? we can assume there is no newer data
+                            || ((fetchWeekday == Calendar.SATURDAY) || (fetchWeekday == Calendar.SUNDAY))
+            ) { // return cached rate
+                try {
+                    callback.onSuccess(getRate(quoteCurrency));
+                } catch (ExchangeException ex) {
+                    callback.onError(ex);
+                }
+                return;
+            }
+        }
+
+        final Request httpRequest = createHttpRequest(baseUrl);
+
+        okHttpClient.newCall(httpRequest).enqueue(new okhttp3.Callback() {
+            @Override
+            public void onFailure(final Call call, final IOException ex) {
+                callback.onError(ex);
+            }
+
+            @Override
+            public void onResponse(final Call call, final Response response) throws IOException {
+                if (response.isSuccessful()) {
+                    try {
+                        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
+                        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
+                        Document doc = dBuilder.parse(response.body().byteStream());
+                        doc.getDocumentElement().normalize();
+                        parse(doc);
+                        try {
+                            callback.onSuccess(getRate(quoteCurrency));
+                        } catch (ExchangeException ex) {
+                            callback.onError(ex);
+                        }
+                    } catch (ParserConfigurationException | SAXException ex) {
+                        Timber.w(ex);
+                        callback.onError(new ExchangeException(ex.getLocalizedMessage()));
+                    }
+                } else {
+                    callback.onError(new ExchangeException(response.code(), response.message()));
+                }
+            }
+        });
+    }
+
+    private Request createHttpRequest(final HttpUrl url) {
+        return new Request.Builder()
+                .url(url)
+                .get()
+                .build();
+    }
+
+    final private Map<String, Double> fxEntries = new HashMap<>();
+    private Calendar fxDate = null;
+    private Calendar fetchDate = null;
+
+    synchronized private ExchangeRate getRate(String currency) throws ExchangeException {
+        Timber.e("Getting %s", currency);
+        final Double rate = fxEntries.get(currency);
+        if (rate == null) throw new ExchangeException(404, "Currency not supported: " + currency);
+        return new ExchangeRateImpl(currency, rate, fxDate.getTime());
+    }
+
+    private final static SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
+
+    {
+        DATE_FORMAT.setTimeZone(TimeZone.getTimeZone("UTC"));
+    }
+
+    private void parse(final Document xmlRootDoc) {
+        final Map<String, Double> entries = new HashMap<>();
+        Calendar date = Calendar.getInstance(TimeZone.getTimeZone("CET"));
+        try {
+            NodeList cubes = xmlRootDoc.getElementsByTagName("Cube");
+            for (int i = 0; i < cubes.getLength(); i++) {
+                Node node = cubes.item(i);
+                if (node.getNodeType() == Node.ELEMENT_NODE) {
+                    Element cube = (Element) node;
+                    if (cube.hasAttribute("time")) { // a time Cube
+                        final Date time = DATE_FORMAT.parse(cube.getAttribute("time"));
+                        date.setTime(time);
+                    } else if (cube.hasAttribute("currency")
+                            && cube.hasAttribute("rate")) { // a rate Cube
+                        String currency = cube.getAttribute("currency");
+                        double rate = Double.valueOf(cube.getAttribute("rate"));
+                        entries.put(currency, rate);
+                    } // else an empty Cube - ignore
+                }
+            }
+        } catch (ParseException ex) {
+            Timber.d(ex);
+        }
+        synchronized (this) {
+            if (date != null) {
+                fetchDate = Calendar.getInstance(TimeZone.getTimeZone("CET"));
+                fxDate = date;
+                fxEntries.clear();
+                fxEntries.putAll(entries);
+            }
+            // else don't change what we have
+        }
+    }
+}